Self-renewing fuse



S. H. BROOKS.

SELF RENEWING FUSE.

APPLICATION'HLED me. n. I919.

1,416,258. V Patented May 16, 1922.

A TTOANE y so constrnctedthat,. should the current exceed UNITED sr-Aras PATENT OFFICE.

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s amaaonommurmn l Patented May 16,1922.

Application filed August 11, 1919. Serial No. 816,652.

Toallwkoin'itmay concern: I

Be it known that STEPHEN H, .BFOOKS, a-citizen of the United States, residing at Cleveland in the county of Cuyahoga and State of Ohio, PlainDealer Building, has invented certain new and; useful Improvements in Self-RenewingFuses; and he does declare the following to be a full, clear, and

exact description of the invention, such as will enable others skilled in theart to WhlCh it appertains to make and u'se'the same, reference being had to the accom anying drawings, and to the lettersand figures of reference marked thereon, which form a partof thi specification.

This invention relates to fuses, the rimary object thereof, being to provide a break the circuit when the current above a determined value is passing through the cir cuit in which the fuse formsa part, and to so construct the fuse that the element which renders certain contacts ineffective, will displace itself in such a manner as .to render other contacts effective.

Accordingto my invention the fuse primarily contem lates a plurality of contacts,

two or more 0 which may be normally rendered effective by the interposition ofa conductor connector, thedev1ce being so "an estimated value, the conductor-connector i the pareof an operator.

will become fused, so as to interrupt the curren-t, but the fused material will dis lace itself so a to connect other contacts 0 the same'device. and which are adapted to be immediately put in circuit with the meanconductor without any special attention on a In the drawings: I

. Fig. I is 'a pe ctive view of a fuse con.-

structed in' accoi'dziice with' my invention.

Fig. II is a perspectiveview of a fuse showing the conductor-connector in its-nornial position and one-half-of the split casing removed;

- ri III i a similar view showing the conductor-connector after it has been fused certain other contacts. 7

Fig. IV is a view similar to Fig. II, showto break certain of the contacts, and connect ing'a slightly modified form of fuse.

The form of fuse shown in Fig. I, II, and III, consists of a casing, which for consewhich will be effective to automatically it will be apparent that rent venience may comprise two arts, 1 and 2, adapted to be connected toget er by suitable fastening devices 4. The parts consist of blocks of insulating material of 1 and 2 may fiber, porcelain or the like and within the chamber are shown four 7 contacts-5, 6, 7, and 8, from each of which projects a plugjor binding post,'those, illustrated being designated, 5, 6, 7 and 8- respectively, and by reference to Fig. 11 it will be observed that the contacts 5 to8 both inclusive are spaced equi-distantly,

and that the 'flat sides of the casing are in vertical planes, so that a con-' ductor-connector, for exam le, a wafer "9 of fusible material placed wit in the chamber 3, will rest in. a vertical plane with. three. iedges abutting against three of the contacts, in the present instance,'5,. 6, and 7. It will be observed that the wafer isto. one side of permit a displacementof the fused connector chamber 3, so as to provide a flow space to when sin-abnormal current flows through the r contacts. Assuming that the current is entering the fuse through 5, the line may be tapped through 6 or 7 e or both. In the event that abnormal current flows .through. the will become fused conductor-connector, it and the fused material will pass away from 5. 15 indicated in Fi .111 so that while the.

current will be bro en, the fusedrmaterial will connect contacts'fi, 7, and '8, and by tumingthe fuse casinga quarter of a turn, 6 may be connectedto the main line and 7 or 8 orboth may be connected to leads. Then in the 'eventthat abnormal current passes through the circuit, the wafer, 9 will again become fused, and break contact with 6 but- ,without any special treatment.

.In Riga-IV, I have shown the casing as substantially triangular'with three contact s designating 10, '11, and 12, with. correspond-,

ing'binding posts ah'dprojections and the shown as hexagonal with a conductopcom nector 14, connecting the contacts 10,and 12. After abnormal current passes throu the line, the conductor-connector 14 will be fused and flow into contact with 11,'breaking contact with 10, therefore the conductor which chamber 13 corresponding-m3 in Fig.- II, is

has previously been connected to 10 may be about the perimeter of the chamber, and a transferred to 11, the fuse turned one-third gravitating fusible contact connector within of a circle, and the current may then be the chamber disposed to flow upon fusing so 10 switched onto the line. as to connect contacts crosswise of the cham- '5 l I claim ber.

A renewable fusecomprising a casing hav- In testimony whereof I aflix my signature.

ing a chamber, contacts equi distantly spaced STEPHEN H. BROOKS. 

